查询词典 shrub land
- 与 shrub land 相关的网络例句 [注:此内容来源于网络,仅供参考]
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Among the species we measured, the maximum water holding specie is Abelia chinensis, and the minimum is Cudrania tricuspidata, and the water holding capacity of Abelia chinensis is three times as Cudrania tricuspidata. The shrub and herbage amount of six forest types is Shrubbery and grass land, Pinus massoniana forest, Mixed conifer forest, Conifer and broadleaf forest, Broadleaf forest and Cupressus funebris forest in order. And the water holding amount of shrub and herbage have positive relative with their amounts.
6种森林类型林下凋落物存储量从大到小依次是柏木林、针阔混交林、阔叶林、针叶混交林、灌草地和马尾松林;各种森林类型的凋落物都以半分解层为主,凋落物的组成以叶子为主枝条为辅,并杂有一些果实、树皮及芽鳞等;凋落物持水量从大到小依次是阔叶林、柏木林、针阔混交林、针叶混交林、灌木林和马尾松林,主要原因是除了受凋落物数量的影响外,还受凋落物成分的影响。
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In the dry land and garden plot, the soil eroding amount of terraced fields is only 1/3 of that be ploughed directly along the slope. It is difficult that assart along the contour in the dry land and garden plot, after the first 1~2 years, the soil eroding amount will increase at double. From the soil and water conservation point of view, the mode that integrates arbor, shrub and grass in woodland is the best, the mode that plants grass in bare land is the second.
等高作梯的旱耕地和园地土壤侵蚀量仅为顺坡直耕的早耕地和园地顺坡的1/3左右;早耕地、园地等高开垦的强度大,开垦之后1~2年土壤侵蚀量成倍增长;从水土保持角度看,林地乔、灌、草结合模式最好,裸地植草模式次之。
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In this paper, as a case of Karamay, we have studied on space-time changement of soil quality in oasis of arid area. We measured quality for different land use types and years in same type by combinativing field sampling for Karamay in Xinjiang and analysis in laboratory, which is directed by former theory of soil quality. Then we did integrated evaluation of soil quality for different land use types, and had drew some conclusions as followed: In four land use types, the soil bulk density of layers(0~15cm) for farmland and tree land is bigger than the other land use types.The organic matter of every layer in manpower Tamarix Bulrush land is bigger; organic matter of Tamarix Bulrush land release efficiency nitrogen which result ration of C/N is higher; total nitrogen of all layers in farmland variety great as being effected by mass use of nitrogen in agriculture; deadwood and defoliation of tree、shrub and bulrush pooled in 5cm layer to result that quick nitrogen is the biggest among all layers. The total salt of nature shrub tree land for every layer being bigger than farmland explain that nature shrub thee land strongly stand salt and farmland for basification in this area; that the nutrient of face layer is bigger than the ground layer may be explained by that vegetation gather nutrient to be stored in deadwood and defoliation.
本文对以克拉玛依为例,对干旱区绿洲土壤质量的时间空间变化进行研究,在有关土壤质量的研究理论指导下,通过田间调查取样和室内分析相结合的方法,对新疆克拉玛依市农业开发区的不同土地利用方式及同一土地利用方式下不同利用年限土样土壤理化性质进行测定,从而对新垦绿洲不同土地利用类型土壤质量进行综合评价,结果如下:四种土地利用方式中,农地、乔木林地表层(0-15cm)土壤容重较大;各土层人工柽柳芦苇地的土壤有机质含量均较大;柽柳芦苇地的有机质在矿化过程中所释放出有效氮,导致柽柳芦苇地的C/N比例较高;受到农业耕作使用大量氮肥的影响,农地各土层全氮含量变异较明显;乔木、灌木及芦苇的枯枝落叶主要集中在5cm范围之内,导致几种土地利用方式类型下该层土壤速效氮最大;天然灌木林地的土壤总盐在各层均较大,其次是农地,说明天然灌木林地的高耐盐能力,以及该区农业生产用地的土壤盐碱化程度较重。
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They looked at birds in different areas of vegetation, including intact forest, plantations and shrub land.
他们研究了在不同植被地区的鸟类,其中包括原始森林,种植园和灌木林地。
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Dasiphora fruticosa shrub-land is very common grazing land in Tibet plateau. After overgrazing , its soil physical and chemical characteristics would be out of balance.
金露梅灌丛是东祁连山广泛分布的一种放牧地,长期的过度利用下,使其土壤理化性质发生了相应的变化。
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By analyzing soil quality of 4 kinds of land use types in Kalamay agriculture development area according to principal component analysis, we draw the conclusions: nature shrub tree land is affected little by mankind, a great deal of organic matter return to soil every year, and root system can improve soil physical quality, can absorb salt from soil, so the soil quality of nature shrub tree land is the best; the soil quality of farmland is better than the soil quality of manpower Tamarix Bulrush land, which may be reasoned that man make for soil quality by irrigation to exclude salt and fertilizing organic muck in the earlier oasis digging up period. Soil physical qualities of tree land get harden and worsen for flooding irrigation, furthermore climate in Kalamay is dry and rainless , the other irrigation is very long time after the former one, so soil get harden severity and result soil physical quality get worse and worse.
利用主成分分析法分析新疆克拉玛依农业开发区四种土地利用方式下的土壤质量,得出:天然灌木林地,受人为影响较小,每年有大量有机物质返还土壤,且天然灌木的根系可以很好的改良土壤的物理性质,同时所选天然灌木林灌木多是耐盐碱并且本身又具有吸收积累来自土壤的盐分,土壤质量最好;农田受到的人为影响最大,但农田综合得分却好于人工柽柳芦苇地综合得分,这可能是由于在开垦初期的绿洲农田,受到了人们灌水压盐及增施各种有机无机肥料等有利于土壤质量提高的措施所致;乔木林地,由于人们用大水漫灌的方式灌溉,致使林地土壤变得板结,土壤物理性质下降,加上克拉玛依地区气候干燥少雨,一次灌溉后较长时间后才有下一次灌溉,致使土壤理化性质恶化,土壤质量不高。
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This results indicated that peashrub shrubland created a favorable N condition for its invading the meadow and being invaded by birch forest, and played a important role in altering the successional direction of meadow→peashrub shrub land →birch forest.
尽管箭叶锦鸡儿灌丛植物叶片与凋落物中全N、全P浓度在大多数取样点上都低于硕桦,但表层土中全N浓度高于硕桦和草甸,且其土壤有机质的供氮能力以及维持氮素能力都高于硕桦林和草甸,表明,锦鸡儿灌丛为侵入草甸和硕桦入侵提供了良好的养分条件,在该演替序列的发展过程中起了一定的推动作用。
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Seven different representative vegetation types of alpine grassland in Eastern Qilian Mountains, which were Rhododendron fruticosa shrub land, Salix cupularis fruticosa shrub land, Dasiphoru fruticosa shrub land, Polygonum grassland, Grass steppe, Swamp grassland and Kobresia grassland were selected to be experimental samples.
本文选取东祁连山七种具有代表性的高寒草地植被类型作为试验样地,即杜鹃灌丛(Rhododendron fruticosa shrub land),高山柳灌丛(Salix cupularis fruticosa shrub land),金露梅灌丛,珠芽蓼草地,禾草草地,沼泽草地,嵩草草地。
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Mower is mainly applied to grassland, shrub land of mowing, cleaning and surface roughness of rangelands update, and transformation operations.
割草机主要适用于草场、灌木林地的割草、清理以及地表不平整牧场的更新、改造等作业。
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The reclamation mode of Qidashan iron mine is combination of the forest, garden, shrub, grass and fishery, which can be concluded concisely as follows: the flat field as garden and forest, the convenient water and traffic as meadow, the sloping field as shrub and grass, the low land as fishing pool.
齐大山铁矿废弃地的复垦模式为林、园、灌、草、渔相结合,可以精炼地概括为:平为园林,水利为牧,坡为灌草,低为渔塘。
- 推荐网络例句
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As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.
每逢看到沃林顿那刚毅的脸,那乌黑、忧郁的眼睛,她便会相信,他一定作过不幸的爱情的受害者。
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Maybe they'll disappear into a pothole.
也许他们将在壶穴里消失
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But because of its youthful corporate culture—most people are hustled out of the door in their mid-40s—it had no one to send.
但是因为该公司年轻的企业文化——大多数员工在40来岁的时候都被请出公司——一时间没有好的人选。